General :: Changing FS Type For Internal And External SD On MTK6589

Trying to customize my new device (Runbo X6: MTK6589T, 2GB RAM, 32GB ROM, Android 4.2.1) .

1) Repartitioning

Actually, I successfully edited the partition table in EBR1 and EBR2 and the start addresses in the Scatter file and proofed it multipple times by recalculating, but after flashing, although I get a correct output in system settings and by dumping /proc/emmc, /proc/partitions and /proc/dumchar_info, when I try to push some apps, for ex., above the initial 680MB to /system/app or something similar I get a "disk is full" message. As I was able to find out only the /data and /fat partitions get physically updated by the new sizes, meanwhile the /system and /cache partitions remain physically on the initial state and get updated by the new sizes logical only. Although if after flashing I dump the system image by "cat /dev/block/mmcblk0p5 > /sdcard/system.img" I get an image with a size corresponding to the updated size of the partition.

Initial values:
EBR1
begin /system = 00 18 02 00 (real 00 02 18 00)= 137216 blocks (* 512 bytes + 1024 blocks of 512 bytes) = 70778880 bytes
size /system = 00 50 14 00 (real 00 14 50 00) = 1331200 blocks (* 512 bytes) = 681574400 bytes
begin /cache = 00 68 16 00 = 1468416 blocks = 752353280 bytes
size /cache = 00 F0 03 00 = 258048 blocks = 132120576 bytes
begin /data = 00 58 1A 00 = 1726464 blocks = 884473856 bytes
size /data = 00 00 40 00 = 4194304 blocks = 2147483648 bytes

[Code] ......

I also read somewhere that it is also necessary to edit PMT: in that case I tried to flash with original PMT, edited PMT and without PMT, but cuoldn't notice any difference.

2) Mounting the internal memory and external SDcard on system start natively as EXT4 instead of FAT32

Using my old device (Runbo X5: MTK6577) I had success on mounting the internal storage as EXT4 by disassembling recovery.img and editing /etc/recovery.fstab to change the "vfat" value to "ext4" and reformatting the storage after a successful boot with ne recovery, but on Runbo X6 I get no change to the filesystem after reformatting. By the external SDcard I never had success.